Results 131 to 140 of about 162,674 (286)

Whole tissue imaging of cellular boundaries at sub‐micron resolutions for deep learning cell segmentation: Applications in the analysis of epithelial bending of ectoderm

Developmental Dynamics, EarlyView.
Abstract Background To understand cellular morphology, biologists have relied on traditional optical microscopy of tissues combined with tissue clearing protocols to image structures deep within tissues. Unfortunately, these protocols often struggle to retain cell boundary markers, especially at high enough resolutions necessary for precise cell ...
Sam C. P. Norris, Jimmy K. Hu, Neil H. Shubin   +2 more
wiley   +1 more source

Effects of ramp slope and substrate type on the climbing success of Pelophylax nigromaculatus in agricultural landscapes

Global Ecology and Conservation
Habitat fragmentation has become a serious threat to amphibian populations worldwide. Concrete anti-seepage, widely applied in waterway construction, has posed a threat by causing amphibians to easily fall into concrete irrigation channels and struggle ...
Bo Bi, Ren Geng, Dan Chen, Jing Chen, Qiu Jin, Chengting Zhou, Shaohua Lei, Xiaojun Wang, Guangju Zhao, Xiaobian Wu   +9 more
doaj   +1 more source

Larger Common River Frogs (Amietia delalandii) have Fewer and Shorter Tissue Microplastic Fibres than Smaller Frogs

Bulletin of Environmental Contamination and Toxicology
AbstractLittle is known about microplastics (MPs) in adult frogs. We investigated MPs in adult Common River Frogs (Amietia delalandii) from Potchefstroom, South Africa. Five kinds of samples were analysed: natural water, water used to rinse the skin, skin, intestine, and the remainder of the body (corpus). Tissues were digested.
Mari Burger, Hindrik Bouwman, Louis H. du Preez, Willie Landman   +3 more
openaire   +2 more sources

Field notes on findings of threatened amphibian species in the central mountain range of western Panama [PDF]

, 2012
During field work along a transect in the Cordillera Central of western Panama between 2008 and 2010, we detected several populations of amphibian species which are considered as “Endangered” or “Critically Endangered” by the IUCN.
Carrizo, Arcadio, Hertz, Andreas, Köhler, Gunther, Lotzkat, Sebastian, Ponce, Marcos, Streit, Bruno   +5 more
core  

Streptozotocin induced hyperglycemia in the axolotl

Developmental Dynamics, EarlyView.
Abstract Background Diabetes is a group of diseases characterized by loss of β cell mass and/or function, resulting in hyperglycemia. With no established curative treatment, this has initiated research in β cell regeneration. Current animal models have either limited regenerative capacity (mice) or small size and evolutionary distance from humans ...
Pernille Lajer Sørensen, Anita Dittrich, Henrik Lauridsen   +2 more
wiley   +1 more source

Biophysical processes of morphogenesis in lizard lungs

Developmental Dynamics, EarlyView.
Abstract Background The lungs of squamate reptiles (lizards and snakes) are highly diverse, exhibiting single chambers, multiple chambers, transitional forms with two to three chambers, along with a suite of other anatomical features, including finger‐like epithelial projections into the body cavity known as diverticulae.
Kaleb Hill, Aaron H. Griffing, Michael A. Palmer, Bezia Lemma, Aria S. Lupo, Tony Gamble, Natalia A. Shylo, Andrej Košmrlj, Paul A. Trainor, Celeste M. Nelson   +9 more
wiley   +1 more source

Mosaic activation of the zebrafish hsp70l heat shock promoter: Implications for interpreting transgenes

Developmental Dynamics, EarlyView.
Abstract Background The promoters and enhancers of heat shock genes, such as the 1.5‐kb promoter of the zebrafish hsp70l gene, are valuable tools for temporal activation of transgenes. It has been widely purported that heat shock treatments result in ubiquitous expression of hsp70l‐driven transgenes.
Jong‐Su Park, Xiangyun Wei
wiley   +1 more source

Role of SoxE transcription factors in development and disease

Developmental Dynamics, EarlyView.
Abstract Sox8, Sox9, and Sox10 arose by multiple rounds of genome duplications from a single SoxE gene in ancestral vertebrates. In this review, we will briefly discuss the molecular structure and function of SoxE transcription factors and their evolutionary origin. We will then discuss their expression, function, and developmental disorders.
Merin Lawrence, Gerhard Schlosser
wiley   +1 more source

The hidden impact of an invasive predator: Chronic stress in common frog tadpoles

Global Ecology and Conservation
The presence of non-native predators can induce chronic stress in native species, but the physiological responses of potential prey are not well understood.
M. Vodrážková, I. Šetlíková, J. Navrátil, P. Vodrážka, M. Moos, M. Berec   +5 more
doaj   +1 more source

The effect of trait choice on hybrid species distribution model projections under climate change

Ecography, EarlyView.
Species distribution models (SDMs) have been increasingly combined with thermal performance data to enhance their transferability and to provide a physiological explanation for the predicted geographic patterns. Yet, while it is widely acknowledged that thermal sensitivities may vary among biological traits, it remains largely unexplored to what extent
Soria Delva, Jorge Assis, Kenny A. Bogaert, Aisling J. Daly, Wissam Barhdadi, Jan M. Baetens, Bernard De Baets, Olivier De Clerck   +7 more
wiley   +1 more source